A positioner that is used for driver's cabin assembly to weld dress

The utility model provides a positioner that is used for driver's cabin assembly to weld dress, includes the floor longeron and sets up the slotted hole on the longeron of floor, and the slotted hole lower extreme is provided with the cylinder, and the columniform locating pin is installed to the piston rod head end of cylinder. On main welding dress in-process falls to put the slotted hole of floor longeron to corresponding locating pin. Because the locating pin diameter is greater than floor longeron slotted hole diameter, consequently first plane and the second plane of the locating pin after the cutting form the face contact with slotted hole both sides respectively, have effectively avoided the line contact to cause locating pin wearing and tearing and the floor lower part assembly scheduling problem that deflects, the driver's cabin problem of deflecting that also can effectively avoid circular locating pin to arouse, therefore make the size precision of driver's cabin obtain higher assurance. Reduce the change frequency of locating pin, and then promote product quality, alleviate intensity of labour. Has rational in infrastructure, location advantage such as accuracy.